Pogba is understood to be happy to rejoin United, who have agreed personal terms with the France international in what could be a world-record transfer.

Mohamed Chacha coached Pogba at Le Havre and is convinced Mourinho is the right manager to develop the 23-year-old.

"Returning to United will be a beautiful thing for Paul," Chacha told Gazzetta World. "When he was there he didn’t have the opportunity to break through to the first team. Now, with his return he can show his talents.

"I don’t like to talk about money, but if the Red Devils are willing to pay so much it’s only because Paul is a great talent and a golden boy who works so hard to win everything.

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"He’s only 23 years old and has room to grow. To train with great players and with a great coach will always make you better. We have yet to see his peak."

Chacha was impressed by the teenage Pogba's composure at United, despite his 'lanky' frame.

"It was the first time Pogba had been far away from home. What dazzled me was his calmness on the pitch and his exceptional technique. He took many risks with the ball and looked to create a new move every day.

"For someone as lanky as he was, it was an amazing thing. Paul didn’t have highly developed physical attributes yet, however, he had mass and strength in his legs. Afterwards, at United he grew so much in an athletic aspect.